This block is a standard product which is produced in various sizes, formats and bulk densities. The outstanding thermal insulation by air trapped in millions of pores is a characteristic feature. The requirements are easily met with a thermal insulation value of up to lamda (λ) 0.09 W/(mK). Other properties of this material include the high load-bearing capacity of solid blocks with a robust supporting frame to bear loads from all sides, as well as outstanding protection against fire. YTONG blocks can be used for fire walls. Pockets cut into the block allow these blocks to be laid ergonomically, as well as quickly and easily on a thin mortar bed thanks to large formats with tongue and groove. Blocks can easily be cut to the required size with a saw. YTONG aerated concrete is made from natural raw materials – sand, lime, cement, water and a small amount of sponging agent (powdered aluminium).